Improvement in millstone-balances



R. K. ENT. Mllstone Balance.

No. 197,023. Patented Nov. 13, i877.

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NJETIS'. FHOTD-LITMOGRAFHER WASHINGTON` D C.

UNITED STATES PATENT QEEIGE.

RALPH k. ENT, 0E NORTE To'PExA, KANSAS.

IMPROVEMENT IN MlLLSTONE-BALANCES.

Specification forming part of Letters Patent No. 197,023, dated November13, 1877; application filed September 22, 1877.

To all whom it may concern Be it known that I, RALPH K. ENT, of NorthTopeka, in the county of Shawnee and State of Kansas, have invented anew and Improved Millstone-Balance, of which the following is aspecification:

In the accompanying drawing, Figure l represents a top view, and Fig. 2a vertical central section on line a: Fig. l, of my improvedmillstone-balance.

Similar letters of reference indicate correspending parts.

This invention relates to an improved millstone-balance, by which therunning as well as the standing balance may be adjusted without oneinterfering with the other, and thereby a millstone kept always inperfect balance with little trouble.

The invention consists of a millstone'having a nmnber of horizontaltubes and adjustable weights for the standing balance, and a similarnumber of vertical tubes and weights for the rlmning balance.

Referring to the drawing, A represents a millstone, that is supported onthe spindle in the customary manner, and provided, preferably, with fourhorizontal tubes, B, and weights B', and with four vertical tubes, C andC.

The tubes B are arranged radially to, and at uniform distance from, theaxis of the stone and each other, and the tubes C also at equal distancefrom the axis of the stone and from each other.

The weights C of the vertical tubes C are adjusted by means of a centerscrew-post, a,

tmned by a key, the weights being prevented from turning by concavedgrooves at diametrically opposite points, sliding on convex ribs b ofthe tubes.

By adjusting the weights higher or lower in the vertical tubes, thestone is readily adjusted when out of running balance.

The horizontal weights B turn on fixed center screw-post d, by means ofa fork-shaped driver, inserted into holes of the weights. By setting theweights nearer to or farther from the center of the stone the standingbalance is accurately obtained.

The adjustment of the weights of the running balance does not interferein the least with the adjustment of the standing balance, so that themillstone may be made to run with great facility with a true running.and standing balance.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

A millstone having a number of symmetrically-arranged horizontalguide-tubes with adjustable weights, and a separate number ofsynunetrically arranged vertical guide-tubes and adjustable weights foradjusting the stand ing and running balance of the stone withoutone'interfering with the other, substantially in the manner and forpurpose set forth.

RALPH K. ENT.

Witnesses W. S. BROWN, R. G. MARTIN.

